Improvement in lightning-rods



VERMILYAQREYBURN & HUNTER.

Lightning Rod.

No. 92,551 4 Patented July 13,1869.

- 'I m M waited $21M @atent Gtiijiine.

LELAND D. VERMILYA, OF DAYTON, OHIO, AND WILLIAM S. REYBURN AND EDMOND A. \V. HUNTER, OF PHILADELPHIA, PENNSYLVANIA.

Letters Patent No. 92,551, dated July 13, 1869.

IMPROVEMENT IN LIGHTNINGRODS.

The Schedule referred to in them Letters Patent and making part of the same.

To all whom it may concern Be it known that we, LncANn 1). V IRMILYA, ofDayton, Montgomery county, Ohio, and \VILLIAM S, REY- nnmz and EoMosn A. W. Hux'rnn, of Philadelphia, Philadelphia county, Pennsylvania, have invented a new and useful Improvement in Lightning-Rods; and we do hereby declare that the following is a full, clear, and exact description thereof, which will enable others skilled in the art to make and use the same, reference being had to the accompanying drawings, forming part of this'specification.

This invention relates to lightning-rods; and

It consists in forming a rod of a core of angle-iron, to which a strip or sheet of copper is so applied as to tit perfectly at every point and form also a tight joint at its contiguous edges, the core and its casing being twisted together, all as will be hereinafter described.

In the accompanying sheet of drawings- Figure 1 represents a view of a section of rod construted according to our invention.

Figure 2 is an end view, showing the form of the rod in cross-section.

Similar letters of reference indicate corresponding parts.

' A represents the rod, which is formed of a core, a,

of angle-iron, and an outer covering or casing, b, of sheet-copper, which fits closely to the angles and plain surface of the core, as shown.

The iron (in cross-section) is in the form of a cross, there being four wings or angles, (there may be three or more wings or angles) of' suflicicnt weight to give the required strength to the rod when the same is twisted or made in the spiral form, as represented in the drawing. This is undoubtedly the best form that a given weight of iron can be put into for a ligl1tningrod, as its self-supporting power. and conductibility can not be excelled, and it may be called a first-class iron rod.

For increasing the conductive power of the rod, we cover the iron (water-tight) with sheet-copper. This we do when we twist the rod, the sheet of copper being put on and the rod twisted at one and the same operation.

The edges of the copper ribbon are lapped over each other, and pressed down, so as to efi'cctually oxclude water and prevent oxidation.

The copper is finnly pressed to the surface and into the angles of the iron, and the rod in this spiral form is equal, in its conductive power, to around copper rod 'of the same diameter, while the stiiiiiess and strength strength and self-supporting power,) can be manufactured for one-third 'the cost of the solid copper rod above named.

We are thus enabled tofurnish to the publiea lightning-rod quite equal, if not superior to any rod in use, at a greatly reduced expense.

Having thus described our invention,

What we claim as new, and desire to secure by Lettens Patent, is-

The lightning-rod A, consisting of thecorc a of angle-iron, encased by the copper strip 1) applied thereto, and twisted with it atthe same operation, so as to fit perfectly every portion of the sin-thee of said core, and form a tight joint at the contiguous edges of the copper, as herein set forth, as a new article of manufacture.

LELAND D. VERMILYA. WILLIAM S. REYB'URN. EDMOND A. W: HUNTER. Witnesses for VERMILYA:

Jaoon O. STALEY, Dnms REGAN. Witnesses for REYBURN and Huxrnu:

J. W. MOOREHEAD, F. J. MARTIN. 

